Belated ITR Filing Under Section 139(4) — What You Lose After 31 July 2026
Miss 31 July and you can still file until 31 December 2026 — but with a ₹5,000 fee, interest charges, and permanent forfeiture of capital loss carry-forwards. Here is exactly what changes.
Harun Raaj
Chartered Accountant · Harun Raaj & Associates
If you miss the 31 July 2026 deadline for AY 2026-27, you can still file a belated return under Section 139(4) of the Income Tax Act, 1961 — but only until 31 December 2026. After that date, you cannot file voluntarily. The costs are not just financial — you permanently lose the right to carry forward certain losses.
What Is a Belated Return
A belated return is any return filed after the due date under Section 139(1). For individuals and HUFs with non-audit cases, the due date for AY 2026-27 is 31 July 2026. The belated return is a valid return and satisfies filing compliance — but it carries penalties, interest, and loss of certain privileges.
New Income Tax Act, 2025: The new Act, which governs Tax Year 2026-27 (FY 2026-27) onwards, retains equivalent provisions for late filing. Under the new Act, the filing timeline is anchored to the "Tax Year" rather than Assessment Year. For AY 2026-27 returns (FY 2025-26 income), the Income Tax Act, 1961 governs in full.
Financial Penalties
Section 234F — Mandatory Late Filing Fee
- ₹5,000 if filed between 1 August and 31 December 2026
- ₹1,000 if total income does not exceed ₹5,00,000
This fee is non-negotiable and non-waivable. It applies even if your full tax has been paid via TDS and your return shows a refund.
Section 234A — Interest on Outstanding Tax
1% per month, simple interest on tax remaining unpaid after 31 July 2026, from 1 August 2026 until the date of payment. If your TDS has already covered your entire liability, Section 234A does not apply.
Section 244A — Forfeiture of Refund Interest
If you are due a refund, Section 244A interest runs from 1 April 2026 (for on-time filers) or from the date of filing (for belated filers). By filing after 31 July, you forfeit the §244A interest for April through July — on a ₹1,00,000 refund, that is ₹2,000 given up for no reason.
The Biggest Cost: Loss Carry-Forward Under Section 80AC
This is what most taxpayers do not realise until it is too late. Section 80AC provides that the following losses can only be carried forward if the return is filed within the due date under Section 139(1):
If you realised capital losses in FY 2025-26 — from equity mutual fund redemptions, stock sales, or property — those losses are permanently forfeited if you file after 31 July 2026. They cannot be set off against future capital gains in AY 2027-28 or later.
Example: You sold ELSS units in January 2026 at a loss of ₹80,000 (LTCL) and equity shares at a gain of ₹20,000. Net loss for the year: ₹60,000. If you file on time, this ₹60,000 LTCL carries forward for 8 years and offsets future LTCG. If you file late: the ₹60,000 loss is gone.
Can You Revise a Belated Return?
Yes — Section 139(5) allows revision of any return originally filed under Section 139(1) or Section 139(4). You can file a revised return even if the original was belated. The revision deadline is also 31 December 2026 for AY 2026-27.
So: file a belated return in October, discover an error in November, revise it in November — all valid. Just ensure both the original (belated) and the revision are filed before 31 December 2026.
Worked Example — The Real Cost of Filing Late
Deepak earned salary of ₹8,00,000 and had the following capital transactions in FY 2025-26:
If filed on 28 July 2026: Net LTCL of ₹60,000 carried forward. Offsets future LTCG in AY 2027-28 through AY 2034-35. LTCG of ₹1,40,000 — ₹1,25,000 exemption under §112A = ₹15,000 taxable at 12.5% = ₹1,875 tax.
If filed on 10 September 2026 (belated): Same ₹1,875 tax plus ₹5,000 §234F fee. And the ₹60,000 LTCL carry-forward is permanently forfeited. Over the next 8 years, assuming he earns ₹60,000 LTCG, the lost carry-forward costs him ₹7,500 in future tax.
Total cost of delay: ₹5,000 (234F) + ₹7,500 (lost carry-forward value) = ₹12,500.
Frequently Asked Questions
Can I file after 31 December 2026? No. After the belated return deadline, voluntary filing is not possible. The Assessing Officer can initiate proceedings under Section 144 (best judgment assessment), which typically results in a higher assessed income and demand.
I have no tax liability and no refund — do I still need to file? If your income exceeds the basic exemption limit (₹3,00,000 under the new regime / ₹2,50,000 under old regime), filing is mandatory under Section 139(1) regardless of whether tax is due. Additional mandatory filing conditions exist if you have foreign assets, are a company director, or have deposited more than ₹1 crore in a bank account.
What penalty applies for not filing at all? Beyond §234F, the Assessing Officer can levy ₹5,000 under Section 271F for failure to furnish a return. Criminal prosecution under Section 276CC is possible if tax evaded exceeds ₹25,00,000 — attracting imprisonment of 6 months to 7 years.
If I file a belated return, will I face income tax scrutiny? CBDT's risk management systems assign higher scrutiny probability to late returns, particularly those with a history of delay. However, a belated return with correctly reported income and full tax paid is substantially less risky than not filing at all.
I missed 31 July due to a medical emergency — is there any relief? The Income Tax Act does not provide the CBDT with statutory power to waive §234F. However, if your return has been processed and there is a genuinely exceptional circumstance, a representation to the CIT (Appeals) may be considered under residual powers — though success rates are low. File regardless and pay the fee.
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31 July is 9 weeks away. Protect your loss carry-forwards by filing on time. File your ITR with Harun Raaj & Associates →
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See Also
Frequently Asked Questions
What happens if I file my income tax return after 31 july 2026 for AY 2026-27?+
If you file after 31 July 2026 but before 31 December 2026, you can file a belated return under Section 139(4). However, you will incur a mandatory late filing fee of ₹5,000 under Section 234F (or ₹1,000 if total income does not exceed ₹5,00,000), plus interest under Section 234A at 1% per month on any unpaid tax. After 31 December 2026, you cannot file voluntarily at all.
Do I lose refund interest if I file a belated return after 31 july 2026?+
Yes. Under Section 244A, refund interest for on-time filers runs from 1 April 2026, but for belated filers it runs only from the date of filing. By filing after 31 July, you forfeit Section 244A interest for April through July — for example, ₹2,000 on a ₹1,00,000 refund.
Can I carry forward business losses if I file a belated ITR after the due date?+
No. Under Section 80AC, business losses (both non-speculation under Section 72 and speculation under Section 73) can be carried forward only if the return is filed within the due date under Section 139(1). If you file a belated return, these losses are permanently lost and cannot be offset against future years' income.
What capital losses do I permanently lose by filing a belated return?+
Under Section 80AC, both short-term capital losses (Section 74) and long-term capital losses (Section 74) can only be carried forward if the return is filed by the due date of 31 July 2026. Filing after that date permanently forfeits your right to carry forward these losses.
Is the late filing fee under Section 234f waivable if I file a belated return?+
No. The Section 234F late filing fee of ₹5,000 (or ₹1,000 if total income does not exceed ₹5,00,000) is mandatory and non-negotiable. It applies even if your full tax has been paid via TDS and your return shows a refund.
When does the deadline end to file a belated return for AY 2026-27?+
The deadline to file a belated return under Section 139(4) for AY 2026-27 is 31 December 2026. After this date, you cannot file a return voluntarily, and your only option is a belated assessment initiated by the tax authority.
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